HSN/TSN Lookup

HSN/TSN lookup allows you to identify vehicles using German vehicle registration numbers (Fahrzeugschein). This feature is available on the Enterprise plan.

What Are HSN and TSN?

HSN (Herstellerschlüsselnummer) — A 4-digit manufacturer code assigned by the German Federal Motor Transport Authority (KBA)
TSN (Typschlüsselnummer) — A 3-character type code that identifies the specific vehicle model/variant

Together, HSN and TSN uniquely identify a vehicle type in the German registration system. You can find these codes on the vehicle registration document (Fahrzeugschein/Zulassungsbescheinigung Teil I), in field 2.1 (HSN) and 2.2 (TSN).

How to Use

Go to the Vehicles page
Switch to the HSN/TSN tab
Enter the 4-digit HSN (e.g., 0588)
Enter the 3-character TSN (e.g., CAU)
Click Search

Results

The lookup returns:

The matching vehicle with full details (brand, model, variant, platform, year range)

Engine specifications

KType number

If multiple matches exist, all alternatives are shown

Integration Points

HSN/TSN lookup is integrated across FitmentPro:

Vehicles page — Dedicated HSN/TSN search tab
Fitment editor — Quick lookup button in the cascade selector
Storefront — HSN/TSN Lookup theme block for customers
Search index — HSN/TSN codes are indexed in product search terms

Plan Requirement

HSN/TSN lookup requires the Enterprise plan ($79.99/month or $799.99/year).